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Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Cambeva: Probably derived from the Tupi-Guarani, is a popular name for trichomycterid fishes in southern and south-eastern Brazil (Ref. 119381); occidentalis: Name 'occidentalis' from the Latin word meaning 'occidental', in reference to the type locality being the western-most record for Cambeva variegata complex (CVC).
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce demersale. Tropical
South America: Brazil.
Dimensione / Peso / Età
Maturità: Lm ? range ? - ? cm
Max length : 4.6 cm SL maschio/sesso non determinato; (Ref. 138050)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 2; Raggi dorsali molli (totale) : 8; Spine anali: 2; Raggi anali molli: 5. This species is distinguished from its congeners by the following set of characters: 20 or 21 dorsal and 6-8 ventral caudal-fin rays; 25-27 interopercular odontodes and 21-24 premaxillary teeth; medial margin of the autopalatine nearly straight to slightly convex; sesamoid supraorbital with a lateral projection; anterior portion of the mesethmoid just posterior to cornu base relatively broad; dorsal process of the opercle stick-shaped; anterior portion of the preopercle not distinctively elongated; parurohyal foramen small; and posterior process of the parurohyal long, with a length about equal the lateral process length (Ref 138050).
Body shape (shape guide): elongated; Cross section: oval.
The species inhabits a shallow stream less than 50 cm in depth and approximately 4-5 m in width, characterized by moderate to sparse riparian cover consisting mainly of a thin line of bamboo and understory vegetation. The substrate is predominantly sandy, with sections of moderate flow lined with pebbles (Ref. 138050).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Costa, W.J.E.M., V.M. Azevedo-Santos, J.L.O. Mattos, P.L.C. Uzeda, P.J. Vilardo, F.P. Ottoni and A.M. Katz, 2025. Integrative taxonomy revealing microendemic species of Cambeva (Siluriformes: Trichomycteridae) in streams draining Serra da Canastra, southeastern Brazil. Zoologischer Anzeiger 318:1-15. (Ref. 138050)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: di nessun interesse
Strumenti
Rapporti speciali
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Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00759 (0.00337 - 0.01709), b=3.00 (2.81 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (10 of 100).
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